I too saw that part and it is used on plenty of M/B's both gas and diesel...I think my old 91 300CE has this malfunctioning part as when the engine is cold it runs fine but when it warms up it misses. Sound like fuel system is delivering too much fuel. I replaced the water temp sensor which feeds the injection system but no difference. If I unplug the sensor wire then car runs great.

Maybe I should throw on another new part like this solenoid which looks like it gets feedback from the temp switch i just replaced. Any ideas?